中生代火山岩锆石Pb/U法与激光40Ar/39Ar法定年结果对比

详细信息

收稿日期: 2012-02-09

刊出日期: 2012-02-29

COMPARISON BETWEEN THE ZIRCON U-Pb DATING AND LASER 40Ar/39Ar DATING FOR THE MESOZOIC VOLCANIC ROCKS

Received Date: 09 February 2012

Publish Date: 29 February 2012

摘要: 通过对龙江组和光华组锆石Pb/U和激光40Ar/39Ar两种方法同位素定年结果的对比研究，发现二者对于中生代火山岩的定年结果极为相近.后者相对快捷、方便、经济.认为激光40Ar/39Ar定年，适用于1：5万和1：25万区域地质调查及相关的综合研究项目工作.
- 中生代 /
- 火山岩 /
- 锆石Pb/U定年 /
- 激光⁴⁰Ar/³⁹Ar定年
Abstract: The results of zircon U-Pb dating and laser 40Ar/39Ar dating for the volcanic rocks from the Longjiang and Guanghua formations are compared respectively. The two dating methods display a significant close age. Due to its economy and convenience, the laser 40Ar/39Ar dating method would be useful and practicable in the 1:50 000 and 1:250 000 regional field works and other studies.
- Mesozoic /
- volcanic rock /
- zircon U-Pb dating /
- laser ⁴⁰Ar/³⁹Ar dating